The Bulls are expected to tank this season, but this wasn’t exactly what they had in mind.

Bobby Portis and Nikola Mirotic were involved in an altercation Tuesday that sent Mirotic to the hospital, The Vertical reported. The scuffle began as a verbal argument, but escalated to shoving and punches thrown. Portis connected, and Mirotic ended up on the ground for several minutes, ESPN reported.

Mirotic suffered a concussion and fractures to his jaw and is expected to be “out indefinitely,” according to a statement released by the Bulls. Surgery will likely be required.

“The Bulls are evaluating disciplinary action,” the statement read. “An update will be provided when applicable.”

Portis was a first-round pick in the 2015 draft from Arkansas. Mirotic, in his fourth year with the Bulls after being a 2011 pick by the Rockets, was slated to be the Bulls’ starting power forward this season.